Home / 520,243,015,661.65-717,877,134,791.23-288,766,291,230.20

Finding the Fourth Proportional to 520,243,015,661.65, 717,877,134,791.23 and 288,766,291,230.20

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Solution

The fourth proportional to 520,243,015,661.65, 717,877,134,791.23 and 288,766,291,230.20 is: 398,465,162,495.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,661.65 : 717,877,134,791.23 = 288,766,291,230.20 : x
  2. Step 2: Convert to fraction form
    520,243,015,661.65/717,877,134,791.23 = 288,766,291,230.20/x
  3. Step 3: Cross multiply
    520,243,015,661.65x = 717,877,134,791.23 × 288,766,291,230.20
  4. Step 4: Simplify right side
    520,243,015,661.65x = 207,298,717,772,625,865,605,120
  5. Step 5: Solve for x
    x = 207,298,717,772,625,865,605,120/520,243,015,661.65
  6. Step 6: Final answer
    x = 398,465,162,495.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.